This is the Fortress Maximus I built, In his base mode he can acomadate up to 6 micromasters/minicons, In robot mode he has a shoulder mounted cannon and "suprise attack" leg mounted weapon module, he is also able to turn into a mobile battle station. He also has Cerebros the headmaster with two cannons which are able to be stored on his back.
I hope you like him and please comment.
Quoting Commander Scorch (Mandalorian)
dosen't look much like the g1 fortres maximus if thats what you were going for.
With most of my lego transformers, I use their name but I make their look from scratch, it's a bit more of a challenge if you build without anthing to base it off, so no, I wasn't going for his classic look.